39 lines
1.7 KiB
Diff
39 lines
1.7 KiB
Diff
From: Arnd Bergmann <arnd@arndb.de>
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Date: Sat, 3 Sep 2011 17:54:44 +0200
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Subject: [PATCH] ARM: add io{read,write}{16,32}be functions
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commit 06901bd83412db5a31de7526e637101ed0c2c472 upstream.
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These functions are used in some PCI drivers with big-endian
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MMIO space, and they are trivial to add here.
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Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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---
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arch/arm/include/asm/io.h | 6 ++++++
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1 files changed, 6 insertions(+), 0 deletions(-)
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diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
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index d66605d..bad7bfb 100644
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--- a/arch/arm/include/asm/io.h
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+++ b/arch/arm/include/asm/io.h
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@@ -260,10 +260,16 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
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#define ioread16(p) ({ unsigned int __v = le16_to_cpu((__force __le16)__raw_readw(p)); __iormb(); __v; })
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#define ioread32(p) ({ unsigned int __v = le32_to_cpu((__force __le32)__raw_readl(p)); __iormb(); __v; })
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+#define ioread16be(p) ({ unsigned int __v = be16_to_cpu((__force __be16)__raw_readw(p)); __iormb(); __v; })
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+#define ioread32be(p) ({ unsigned int __v = be32_to_cpu((__force __be32)__raw_readl(p)); __iormb(); __v; })
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+
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#define iowrite8(v,p) ({ __iowmb(); (void)__raw_writeb(v, p); })
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#define iowrite16(v,p) ({ __iowmb(); (void)__raw_writew((__force __u16)cpu_to_le16(v), p); })
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#define iowrite32(v,p) ({ __iowmb(); (void)__raw_writel((__force __u32)cpu_to_le32(v), p); })
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+#define iowrite16be(v,p) ({ __iowmb(); (void)__raw_writew((__force __u16)cpu_to_be16(v), p); })
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+#define iowrite32be(v,p) ({ __iowmb(); (void)__raw_writel((__force __u32)cpu_to_be32(v), p); })
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+
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#define ioread8_rep(p,d,c) __raw_readsb(p,d,c)
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#define ioread16_rep(p,d,c) __raw_readsw(p,d,c)
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#define ioread32_rep(p,d,c) __raw_readsl(p,d,c)
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--
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1.7.7.2
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